The Backside by Black Pine Litewave Self-Inflating Camping Mat Self-inflating foam camping mat with comfortable 2-inch thickness Memory foam insulates you against the cold, cushions you from hard ground Twist open valve to let the air flow into mat and expand the foam cells Honeycomb ripstop shell with 50-denier stretch top and 75-denier nonslip back Measures 72 x 25 x 2 inches; weighs 2.3 pounds